Front control arm bushing issue - weld it in place?

[sasquatch]

So, I've come across a major problem with MTC (aftermarket) front thrust arm bushings....the large round ones on the front most control arms. The bushings are too small in diameter to be press fit into the OE control arm. I have two choices; go buy OE BMW bushings or weld in the MTC bushings. The MTC bushings have about 1/2 mm clearance gap so they just barely slip into the control arm. If I could manage the heat properly, do you think it would be possible to tack weld the bushing onto the control arm? Or is this a bad idea?