RE: Perry pump on O.S 1.08??????
Start with your low speed leaned all the way on the 108 and the pump fairly lean. My high speed needle is 2 turns out and not sensitive. I run 15% fuel.
You can T in to fill the tank at #3 or #6 below. If you T in at #3 (clunk) you will be able to drain the tank easy, but if you have an air leak you will have problems. Enjoy.