Same things has been happening to me, I notice i had a really problem when my brother and his friends ask me to see one of my peds and I had to literally move like 6 mopeds around just to get the one they wanted out.
Moped's are a good investment.. so yea buy more !
Just don't keep junk around, work on one bike until it's done or ul never finish, and don't forget what ped ur working on