I am having problems with my shocks; I have gone through 4 shocks all with the same problems.
The cap at the bottom of the shock body keeps popping off; I am using 40 wt silicon shock oil and once this happens the cap cannot be screwed back on because the threading gets damaged.
I am not a hardcore basher; I really don't do wicked jumps because I have only just got into the hobby in may of this year.
I dont think redcat makes replacement parts and what I do is use silicon tape inside the threading of the cap and on the outside of the cap I use electrical tape to secure it back on the shock body which holds temporarily until I decide to get a complete new shock.
Why is this happening and how can I prevent this?

It might be too high of a weight oil. But i would think the tops would bust off. Cause when you land a jump the piston moves up, and puts pressure above the piston, and creates suction under it. I would pick up the big bores from the 1/8th ultralites, they are amazing.

Rufaster has a great selection and is the best he will be a big help Mike is great!