I sent a NIB 088 up to Naniamo to be built into a full race saw. After many hundreds of dollars and private plane ride to go pick it up here is what I got.
1. Tuned pipe that fits perfectly on a 4 cube saw.
2. Port timing a mile off.
3. When grinding exhaust port and you blow clean thru to the cooling fin above (hole about .500 to .600 dia.) please do not fill hole with JB-WELD and regrind. It was hard to see with a light carbon buildup.
After a few runs trying to get it tuned right and pulling the header for inspection the jb-weld was melting and burning away. Note this started to really show when I had the saw bolted to Madsens Dyno. and taking a few pulls. Tried a few calls but no return call from walkers. Guess they figured they screwed a yankee and there is'nt much I could do about it.
anyway a new jug, 3120 piston and some magic by KD and she runs with the best of them. There is my 2 cents
Rotax Robert