I haven't checked to see if the Triumph sidestand is steel or amuminum, but if it's steel, you should be able to heat it with a torch and bend it a bit. The Piglet was lowered some 4 inches and the stand heated and bent some 15 years ago and there have been no problems with it.

Let's hope there's intelligent life somewhere in space 'cause it's buggar all down here. -- Monte Python