Dave,
I had an action mvp that did the same thing with the front casters. When I
would stop pushing the natural position of the casters would flip backwards. I
finally figured out the the angle of the front casters was adjustable. I had
hell of explaing this to dad, but he finally got it and after an hour of
adjusting in the garage we fixed it
Ive had action mvp, ti sport, and quickie manual chairs.......and Ill tell
you guys my opinion is quickie is the way to go....parts are easily attainable,
the design is proven, and they honor the warranty better than most. As far as
power chairs Ive only had a quickie p-222, so im no expert there.
ron c7