I recently got these replacement rings from Treats for my Hobbit:
I had never done this before, but it seemed pretty straight forward:
-I removed the old rings, carefully slid the new ones on
-Put on new base and head gaskets
-Oiled everything up, carefully compressed the rings and slid the cylinder back on
-Swapped the old bolts for studs and torqued them down to spec (the bolts were stripped out or something and wouldn't torque down enough when I first put the cylinder back on)
I felt pretty good about everything, but when I went to start it back up I had NO compression (gauge reads only 25 PSI). I checked for leaks around the cylinder (head and case) by spraying soapy water and didn't find anything.
So I'm thinking that it must be that I didn't install the the piston rings correctly - I did leave out the "helper ring" that came with the set, so I'm hoping that it's. Are the other things I should be checking for when I pull the cylinder back off, though? (edited)