yet another question (sorry!). this house has a large attached garage with
a 10 foot wide, 7.5 foot high sectional insulated Garaga door installed in
2000. Metal tracking, and wearing metal rollers.
Recently had a nice Craftsman 1/2 horse operator professionally installed.
at the time (last fall) he told me the door was perfectly balanced and
aligned, and could not get any better (thats a good thing).
I've noticed now in the cold spell we've had the door has "bound up" a few
times and caused the operator to reverse. since the real cold has gone and
we're in the -15c stuff, the door seems to open smoothly, but closing from
full-open it sometimes "hops" and "surges" down.
what causes this and whats the fix? the only thing I should really replace
are the rollers, and will upgrade to ball bearing, rubber edged rollers in
the spring. also, is an operator isolator kit worth the money? since its
attached, the operator radiates some noise to the rooms above...
thks for the advice.