Steering wheel catches cowling when turning right.

As above.

Didn't happen prior to changing steering column.....

Does the angle of the steering column reduce pressure on the cowling letting it sit in a better location (further towards the dash say) or is it a case of making clearance via spacers /hacksawing

It's an 87 with a 4 spoke wheel and original cowlings and wheel.

I changed my cowling recently and it started catching. I found that loosening the screws that hold it to the column meant I could adjust the position enough to cure the problem. You could also take the cowling off and fettle it to get a bit more clearance.

Mine does that too, also an ‘87. It didn’t do it before, started after I had to take the wheel and shroud off for some reason. I can’t see any obvious places for adjustment, everything’s tightened down correctly. I’ve chosen the lazy option and I’m just going to let the wheel and shroud wear down together!

I've been waiting two years for it to wear down......

There's a bracket/support that connects column to the bulkhead. You may need to tweek that a bit, if all else has failed.