Now, does anyone know where I can find replacement hydraulic pistons to
replace the ones that used to hold up the back and side windows on the
topper? I'm tired of them hitting me in the back of the head!

Most car parts stores carry them. They get used a lot on hatchbacks and
sometimes on hoods. If it's an aftermarket topper, the store may not
have a way to look up the right part - your best bet is probably to find
out how many different kinds you have (by inspection) and take one each
of the old ones to the store and match them up.

This is exactly what I did today, and we now have topper windows that
pop up -- and stay up.

They're not cheap -- between $15 and $20 apiece at "O'Reilley's Auto
Parts" -- but, wow, what a difference. To not have the danged windows
falling on your head while refueling is a small, but very nice,
thing...
--
Jay Honeck
Owner/Innkeeper
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"