I'm the same way, FT. Went from 128 in 02-03 to 150 the next year, then 160, 170, and now 180 in 06-07. Just the way it is when you start in the 120s and begin to bowl seriously. It's a great time because you get all your big firsts. Your first 200, 225, 250, 500, 600,... I've got all of those so far and got close to 700 once (682). Don't have any honor scores yet.
It's also a great time to be bowling handicap tourneys. You're not sandbagging but you're still improving and unless they have a rule that requires you to use your new average if it's X pins higher than your card, you have a better chance of making some money.
SH