Both my B-38 and B40 have the oiler hole threaded. So I guess some B-38s don't have their oiler hole threaded?
The B-40 engine showed up early this morning on my door step, looks like the box couldn't fit in mailbox out on the street. One box of the display, I expect its the pulleys, is being delivered later today. I'm just waiting for the postman to finish at the street mailboxes.
The Carl's B-40 engine has a new heater, since the back chrome plate is missing. That's a bummer but no big deal but I'll be looking for another B-38 now as that will bother me to no end. What I have done is move my current B-38 heater cylinder to the B-40 base. I also took the time to flip the front plate, the shaft oiler was clocked wrong for whatever reason. It was fun getting all those aluminum rings off but now I can oil it properly.