My 400v is rattling like crazy and after replacing a broken cam chain tensioner I've decided that it must be the valve clearances. I have downloaded the workshop manual from here and it shows some Suzuki tools for holding / turning the camshafts.

Does anyone have a link to a shop that sells these?

Cheers - Ben

http://www.ebay.co.uk/itm/Suzuki-GSF400 ... 58a56df05e

Gave up in the end and listed on ebay - £320 reserve or break if no takers following week