Hobbyist on a budget

[Richard.]

Only really repeating what's been said above but I don't think having a Tig in your line of work is a bad idea.
If I was u I would (in the future) when your budget is a little higher look into a multi process inverter.
Mig, mma, DC lift arc Tig, RTech do them no too expensive and it gives you options with bike and car parts. You can produce those lovely looking Tig welds when needed and even have a stick welder on standby if ever needed

 

[Cobs]

The Cebora 130 is a good little welder - the one from mackie.m looks a bargain for someone. If it's a torch issue I still have a complete torch for sale (see For Sale/Wanted section) though I would first start by stripping down your existing torch and checking the contacts.