For some reason, I can't hit my on house.  For the past few years my average has been around 220 in that house.  Last year, I was down to 216 there.  I've been bowling all summer in several tournaments out of town and have really worked on my game but can't score big there.

Years ago, it seemed everyone bowled better at home and was below their average in strange houses.  I don't believe that today.

It seems like my best angle to hit the pocket there isn't a very good percentage of carry.  I can hit the pocket all night and not score due to corner pins.

In the last few weeks I've bowled in several tournaments out of town and have averaged over 230, yet last night in league, I shot 644.

The shot on the left is good and there is another lefty that out averages me in that house but he doesn't fair very well out of town.  My high set in league there last year was about 750 but I had maybe 10 series over 770 in other houses.

I'd say I average 6 to 8 seven pins a set which doesn't do much for your score

Anyone else have this problem?

Hose...when you are going elsewhere, you are more apt to pick up on the little things sooner and make the adjustments.  Complacency sets in on house shots. I'd wager that is what you are encountering...

For the longest time I couldn't carry, I left ringing 10 pins swish 7-10's 4-9's solid 9 pins. I just couldn't past 3 in a row. I'd hit the pocket 8-9 times per game and just shoot low 200's. (I'm an out of the box thinker) I decided to go to a much weaker ball and now I started to carry everything. I think what has happened is that the new oiling machines really do a good job of cleaning the backends. The combination of strong equipment and clean backends just over powers the pins. The pins are thrown around in such weird angles that it just doesn't carry. The pins don't fall in its proper pin path.( hope you understand what I'm trying to say). Stronger equipment doesn't always help carry. You've seen it before some guy throws a much weaker ball and just bing bangs the pocket all night and out scores the power player.

All summer I've been struggling on my home house shot. And I mean STRUGGLING - average is down to 192 or so.
Last night - I went in, and pretended to be bowling a tournament - put on my REAL thinking cap, and played the lane in a different area than usual for league. Shot my highest series for league for the summer. The lanes played really different - but seemed REALLY easy last night.
So complacency could very well be your problem - I know it was mine.