I have struggled for a year on a condition I haven't really seen elsewhere.

Oil in the heads and really no oil in the midlanes.
One set of houses around here that are convenient to me have this.

The shot is So jumpy at 30 feet that it is hard to control your entry to the pocket.  It seems even much worse on the left as the right side seems to blend it out before the end of practice.  Often I can hit the pocket 7 or 8 times and yet one can see that the ball is just a little grabby then it is a 6 pin, then strike, then split, then 7 pin, then 6 pin.  

I've had many a 9 pack in a row that only yielded two strikes.  All my stuff till now has been drilled cg out as we lefties often do because of all the midlane oil we see all over the country and it tourneys.  This stuff I have was still allowing me to do just fine in tourneys'   But my league average was the lowest I had since I started bowling (20 pin differential between league and tourney).

I'd noted that most of the people that are fine to great league average bowlers  in this area throw the ball very fast, near 17 to 18 mph at the pin deck.

Most of the lefties meanwhile are leaving this set of houses en masse and leaving me the only lefty in some of these leagues or one of two or 3.

Well screw it!  Maybe I've got it!

Had an ElNino with this drilling(a ball I had not liked in the past with my standard cg out drilling.) and it almost worked.

Now I"ve put it on a Flashpoint, and it's beautiful around here!

Drilling just take your normal label leverage or a 4 X 5 and shift down.
Even though I'm a high tracker I never seem to hit my finger or thumb holes.
I don't know why.

In my case I put my pin about 1 inch down and over from ring and the 2 inch pin out cg back towards grip center but below grip center too.

For whatever reason this give me the glide in the midlane that I need instead of the quick bounce and is getting me into big strings of strikes instead of my previous (with my cg out equipment) of 7 pin, strike, 6 pin, almost flush 6 9, strike, 6 pin, 7 pin, strike that I would often get here from 9 pocket packers in a row.  6 of them a board high on contact!

Note the cg out equipment is still tearing em up on league conditions where more midlane but this label shift down is really nice on this tricky local shot.

I'm talking 40 pins different.  

Which leads to a musing.  No wonder these local hotshots have troubles out of town!

REgards,

Luckylefty
PS other things tried without avail. Lower flare equipment, weaker pins, less surface, weaker reactive surfaces, lighter load particles.
PPS I've seen this drilling also really tear them up around here with Triple X's also.