Schaff Piano Supply Co. can supply the regular tubing:

PPCo 22 - Schaff 606A: Tracker Bar, 9/64" ID, 1/32" wall, 100 ft roll
PPCo 23 - Nope
PPCo 25 - Schaff 605A: Expression, 3/16" ID, 3/64" wall, 50 ft roll
PPCo plastic glue is really PVC-E glue, which Schaff also sells.
Speed control pods: check with John Tuttle at player-care.com

Duaine Hechler
Florissant, Missouri
http://www.hechlerpianoandorgan.com/