Most actuators are "tested" before shipping. I have yet to get on that worked without being creative on it. They all leak under the boot where the shaft comes out. If they could perfect a seal/o -ring of some kind they would work great. I always put a hand vacuum pump on them before waisting my time installing them to see that they leak. This is one part that could use some better engineering.
They should open and close semi smooth since one side of the canister has to pull air in as the vacuum is applied to one side or the other. I have a spare that I nedd to take and see if anything can be done to make it better without looking non factory.
68 RS, Ash Gold,pwr windows,Hounds tooth
[This message has been edited by CA420 (edited 10-30-2000).]