Cylinder is on and everything clears. I smoothed out the exhaust port and now just need to check squish.
Here are the pictures:
Not the ideal port shape, but it will work. The bevels were good besides the bottom of the exhaust. It was pretty sharp from the factory, so I smoothed that out some. Make sure you check you kit before installing.
Port pictures. I used a chainsaw file, emery cloth and then some 600 grit sand paper. Not perfectly smooth or shiny (It took quite a while to achieve what I did. Now I know why you guys use dermels), but way better than stock.
Here are the holes slotted out. As Brad mentioned in his thread; from left to right, the measurements are the same on the 064 and 066. Front and back they are different. So slot the holes towards each other till it fits comfortably. Make sure there is no major restriction when tightening the bolts, you want a little amount of play. Try to keep the slots even, but it isn't too crucial. The piston will center the cylinder for you. I used an old 404 chainsaw file to slot the holes. Slow work, but hey; I got more time than money. If you look at the bottom of the picture, you can see some of the exhaust port work I did.
Piston fits good. No drag from the gasket either. To slot the cylinder gasket, I used a hole punch and placed it on the flat spot on my vise. If the surface isn't rigid, you will bend the gasket up when slotting it.
Alright guys, tell me if this seal is in too far......it is around 1-2mm deep. Seems alright, but I still think this bottom end might be a little firm when turning over. It might be seal drag though. I have never put in new seals before, so I don't know what they feel like.
Little promo for Wiha tools here. This t27 wrench I picked up from Baileys last year is just a great tool. German quality and 9 bucks. It makes tightening all bolts easier and is especially good for cylinder bolts. I just got the 4mm and it was like 4 or 5 dollars. Very nice for the older stihl saws and huskys. My dad is a pressman for a printing company and the repairman swears by Wiha tools. "I work on Japanese machines all day with german tools"