I am a new trials rider in San Diego, CA.  I have ridden large adventure bikes extensively and decided to get a trials bike to really learn the fundamentals.  I was fortunate enough to come across a 2002 Gasgas TXTpro from a member of a local riding group.  As a new owner, I want to make sure I am doing the maintenance and set up for the bike properly.  Possibly there is an existing thread I could be pointed towards, but I could not find one.  Here is what I am looking to find out: 
What are the common pitfalls of this year and model that I should look at and remedy if necessary, and what are the remedies?	What are the recommended service intervals and fluids specs?  I would like to go through everything at first as I don't know how long the bike has been since being serviced.  What should I change?	What gas and premix should I use?	I am 6'5" and weigh 250#.  What is my best bet to raise the handlebars?  Risers, or a new bar?  will the cables reach?  If not, how to change them? 	Also, due to my weight and size, what should I do about suspension adjustment/replacement?	Any other questions I should ask or things I should know?
Thank you in advance!