Hi There, I live in Thailand and I recently bought a second-hand NSR 150 SP I absolutely love the bike! but I've only just managed to download the owners manual in English and have realised that the pin spanner (and a few other bits and bobs!) is missing from the toolkit, but i have no idea what size pin spanner I need for the bike - can anyone help, as I need to adjust the chain slack ASAP! And adjustable pin spanners are just too expensive! Also I have noticed recently that in the higher rev range (7000 - 10000) there seems to be an excessive amount of smoke coming from the exhaust, there are no other symptoms that I've noticed - in lower revs and idle there is just the usual 'blue trickle' So I assume it just means I need to get rings and piston replaced - unless someone else can shed any light on the problem? (I use Shell Advance VSX oil) Thanks in advance for any help!