Hi,

sorry for the delay...we were off at toledo

The bubble jett tanks do not require extraordinary packaging.... usally just some foam or something around them to keep them from rubbing/wearing on any structure.

For a whiplash, you can order a 6 oz Bubble Jett PC tank (pole cat design). It fits perfectly in the whiplash. We sold all we had of those at the toledo show.

On the needle.... I goofed. The packing nut does provide for a good part of the seal. If it is pretty loose, it will allow for a leak. Leaving it a bit loose to adjust the needle does not in itself cause a problem. You are right... keep that nut as snug as possible, but it is generally not necessary to tighten it to the point so the needle cant be moved. ( I think where I was going with my previous post, is there are no rubber seals to leak as with other types of needle valves..and I got lost in my own brain clutter )

The piston fit from the factor is always tight. Usually too tight, and it becomes optimal over time. What I meant about the fit coming back, is that in some circumstances, if you let the engine unload, the proper heat cycling can help the parts fit better. If parts are damaged, nothing will fix them, but in most cases I've found success with ABC and especially AAC set ups. The cold compression is a general indication of how the fit is. However, what you want to check is the hot seal. See how the engine fits after running and it is still warm. If the RPM's are not there, after all is said and done, you may want to send the engine back to be checked.

Loose heads happen sometimes. Fortunatly you found that. Over the weekend, we looked at an engine where the head came loose. Engine ran weird, so the guy changed the glow plug. In doing that, the sleeve and head button ended up rotated 90 deg. Engine ran like junk, and he didnt know what to do. Simple fix.

Bob