locustslayer - 50041 is the brace or lower handle, provides extra support for the handle and airbox.
Not sure about the older numbers but the later numbers for the spike kits were 61330 for the 5 tooth and 61332 for the 4 tooth. I think Bob Johnson still has some NOS 5 tooth kits (607 638 9297).
I have a few of each as well, could be had for a price.
Archie - my IPL's show both the 1-45 and 1-46 with bearings in the piston, haven't had either of mine down that far to verify if they are really built that way or not.
Mark
Not sure about the older numbers but the later numbers for the spike kits were 61330 for the 5 tooth and 61332 for the 4 tooth. I think Bob Johnson still has some NOS 5 tooth kits (607 638 9297).
I have a few of each as well, could be had for a price.
Archie - my IPL's show both the 1-45 and 1-46 with bearings in the piston, haven't had either of mine down that far to verify if they are really built that way or not.
Mark