I had the same issue with both my Plastic Sentons. I used eBay big bore shocks and went a little heavier on the shock oil than stock. Also used the stock linear springs and ditched the progressive ones.Yes 3S I got the rig when it was released back a few years. It's been great only broke a few parts from bashing. Shocks just leak a lot.
If you got the coin for sure. Maybe overkill for a 3s. But a good choice.Tekno shocks. FTW