I bought a new Solas prop for my boat, and I'm having a tough time getting it to fit. I bought it from a local shop that has done some good work on my boat, and the guy assures me it's the right prop, but the thrust washer was too thick and it wouldn't fully seat. My boat is a 1980 Entertainer I/O, and the prop is the same pitch/size as the original, but the design has changed a lot in 27 years. Also, even when I find the right thrust washer and get it on there, I can tell already the trim tab is going to just hit the blade. Same guy told me just to grind the trim tab down to give it some more clearance. Anyone have any experience with this? How can I find the right sized Thrust Washer, as I've tried two now and although it's much closer, it still needs about an 1/8th of an inch or so more before I'm comfortable with it.