Hello Airhead friends. I have a '78 R100/7 that is displaying strange starter killing behavior after being a beautiful starter and runner for years. Something developed during a couple years storage that caused difficult starting and starter killing- specifically the starter motor runs but planetary gear track gets stripped. I verified this as of this posting only in the Valeo, but the sounds and symptoms have been the same on the DB Electric starters (nearly identical to Valeo's). I'll list out the bike customizations that might matter for discussion to bring everyone up to speed on the current state of the system. Motogadget M-Unit to control electrics with digital buttons on the handlebars. Enduralast Digital Ignition Dyna 2-in-1 Coil Previous owner put newer Bings on that have the black plastic plate. He said it was off a 90's airhead. Siebenrock head kit NGK spark caps (I forget the specs) As the Frankenstein custom sits, it was starting and running beautifully for a couple years. A lithium battery had been used. Although it was a major pain in my ass, I ruled that out by augmenting it's shitty starting ability with hooking a car battery directly to the starter positive while trying to start this thing. Can anyone tell me why I read that I should not start the car when doing a jump-start connection like this? I haven't had issue with doing so, but would like to avoid it if possible. I ran the carbs dry before putting the bike in storage. I believe my father thought he was doing me a favor and started the bike while he stored it for me over the two years. He can't remember. After two years and a few months I tried to start with fresh gas and a fresh battery. It would not start and needed jumping to continue my efforts. There was coughing and a couple backfires and finally the starter broke. I say broke because I have yet to disassemble to find the exact problem. I can tell you that the motor sounded healthy and strong after something went wrong with the spline gear engagement. This is the same thing that happened on the next THREE DB Electric starters that I put in the bike. The most recent snapped the nose casting off today. My local Lakeville MN vintage/classic airhead mechanic Dale was convinced that the carbs had varnish in the jets. I disassembled and cleaned them before this most recent starter died too. This was my first time performing a carb clean and rebuild. I replaced all the rubber rings on the jets and other bits that I encountered, as well as the bowl seal. I cleaned the choke assembly and blew carb cleaner spray through everything. I followed a solid Youtube video while doing so. I soaked the parts in carb cleaner spray overnight, being the carb noob I am. Everything looked quite clean though. Starting today with 93 octane after all the cleaning seemed much more hopeful than the previous attempts, but alas, this starter died too! What gives!? I find nothing in the interwebs about such problems. BTW, this was 2-5 second bursts of starting. Both pipes blew slow gray smoke. I pulled the plugs after this and they were covered in thick black soot. They were new the last time I tried to start and blew the last starter. Any ideas? Thanks in advance!