You might also try BMX shows and swap meets. Not sure where your at, but there are several shows in the Northern Illinois, NW Indiana areas annually. Start looking for show dates in your area as winter time is "show time".
Certified thread killer
'79/'80 Sekai 2700, Early 70's PX-10, '90/'91 Club Fuji, '83 Miyata 610, '70ish Zeus Gran Sport, '88 Centurion Ironman Master, '89 Bridgestone RB1, '99/'00 Gunnar Rockhound, '99 Surly Cross Check, '09 Surly Cross Check, Fuji Saratoga