I'm sorry to hear that. Almost half of the strength is gone from the joint and the cantilever stresses have been multiplied.
There are MUCH better options out there.
I got the shovel!
The "trigger kit" is something you can buy yourself and install, check put Aliexpress or Amazon for spring sizes and 'ball-tipped' grub screws.
Sadly, these are not likely to resolve your issues as you are only addressing a small part of the trigger issue.
I'll write more...
Speaking of TC planes, Orca slicer just went Beta with thier 2D wing settings for the lightest infill ever!
I'll print a wing when the S1 arrives to see what the weight ends up as.
I don't know if I've posted this or not but I'm getting my Anycubic S1 with AMS next week.
I've been focusing on designing lately with no new prints for a week or so.
I'm focusing on customer items for now I'll let all the new startups flood the market with thier offerings then I'll pick up...
Ok, back to the op. I've bought hundreds of products labeled as refurbished, in most cases (99%?) I've gotten better than new but only a couple times have they let me down.
Airguns? I've only bought 2 refurbished ones and both times they were returned as they were broken and resold without repair.