How bad are they? Really really fine wet and dry does a good job of removing tiny spots of rust and I was told by an old gimmer on an MZ that it actually improves the seal. Don't know if thats true or not, but it could be worth a try!
Cheers
AL
"A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. " - Douglas Adams
Stone the crow's, I'd forgot about that.... did the same on my 250etz racer, many moons ago, will give it a go on the KR, got nothing to loose..... ta.
I had one of them - never raced it though, bought an ETZ251 from a bloke down the road for £50, removed everything chopped the seat in half popped on some clipons, razzed it around for a bit intending to get the motor breathed upon, had first child so sold the bike on eBay for £300 - it was good fun - so light I could pick it up!
Here is a pic of what it looked like when purchased for £50 (even though it only had half a piston it still ran!):
Here is a sketch of how I wanted it to look, will dig out a pic of how it actually looked later!
Cheers
AL
"A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools. " - Douglas Adams
I remeber paying about 250 for a blown motor'd one, then about 100 pounds for a engine rebuild, complete! raiding auto jumbles for bits and pieces, got to snetterton and having a good larf, nice cheap racing...... ha ha...