IQ Tour I have to believe is a great flatter tourney pattern ball....surface + low Rg even roll it kills these kind of lane conditions.  IQ Tour Pearl is the house pattern ball either at OB or P4000.  You need the IQ Tour Pearl if you are playing on a wettish/dry house shot and leaving flat 10's etc.  Or polish your IQ Tour though it's solid so factor that in.  You have the wrong ball IMO.

I've tried my iq tour on every shot and at every surface...it's just not that great for me. It gets me to the pocket on short, carry is average, but I have to take a lot of hand out of it. On every other pattern it's been pretty miserable. You can tell it's a good ball, I just don't match up with it.

If you need help creating angle i could see it not being very good on ths because the core is very low flaring but if you can create angle with them they are sweet IMO. One of the best pearl solid combos on the  market....

People forget, the !Q tour and the Pearl have the modified Centripedal Core. Which is low diff and originally designed for lighter weight balls. Meaning, lighter weighted cores and lower diffs for slow speeds. With that, if you are a country hardballer, a stronger drilling is necessary to get a better reaction. I drilled mine relatively strong, !Q Tour Pearl 45x4x35 (p2 hole 1" bit, 3"deep), and it is one of the most skid flip balls in my arsenal. In fact too much flip made me adjust the surface to 3000.

My take, I've drilled a few and seen a few more. Pin under and long pin to PAP's are a bad idea with the pearl. The low rg low diff core needs to get started and the R2S Pearl goes 60 ft so a stronger drill definitely helps. With the solid, some of the same applies, however, understand that the solid is not made to cover 39 boards. This is where the pearl picks up, as the solid is too smooth to recover. 

The "problem" for some people with the IQ Tour, in my opinion is the strong coverstock, its surface and the super low RG, NOT the differential.

It is more dependent on the bowler's rev rate/ball speed ratio AND the amount of oil+ the lane surface, as to whether or not you can use this ball with its stock matte surface.

This is ALWAYS the case with any dull or polished ball.

If you're leaving weak 10 pins and 7 pins, you need less surface for your rev rate/ball speed and the friction are you're playing.
If you're leaving stoned 10 pins and 9 pins or washouts, you need more surface for your rev rate/ball speed and the friction area you're playing.

The stock surface is probably 500/4000. If you need less surface, try 500/1000/2000/4000 grit surface or try 1500/2000 grit plus a light polish.

I think the problem in what you're seeing is due to the extreme nature of today's house shots.  The IQ Tour overall can't handle the type of volume that is in the middle of house shots, and the R2S cover is way too strong for the extreme dry on the outsides on house shots.  Today's extreme wet dry almost forces you to play one or the other to be successful.  Play the dry with a weaker shell, or play the oil with a stronger piece.  The IQ Tour won't quite respond quick enough when playing the oil then missing into the dry, and it won't read strong enough when pulled into the oil. 

On the other hand, if the pattern is flat enough and you can repeat hitting a 3 board window, the reaction shape is more than consistent to find your groove and stay lined up.

How did I know you would get what I was saying? Thats exactly what the ball does on the overwalled house shots.

Great minds think alike?