I came across this issue a few times in space and on Arkadia. If my ship is damaged so much I have to repair it, I found that I can not just select my tool and start repairing. I get an error saying that I must have the right tool equipped in order to do the repairs. But I have my Rk-5 equipped and have welding wire ready to go. What I found is that I have to actually right click on my vehicle and click "Use Tool" in order to start the repair process. Is this the proper way of doing it, or is it a bug. Just curious, thanks.