Tapman, Your right on the damage to the lines, We have been in the line cleaning business since 1943 and used the crystal machine for many years, However when barrier tubing was introduced this method will damage the barrier lines especially. We have gone to circulating pump and various chemicals, Never had the buttery compaint though. Keep us posted. Larry, Zimmerman and Martin had an employee the was running the business out of his home after the shop closed I have the number somewhere if you would want me to look for it.
