Could be wrong, but I don't believe the cylinder is Nikasil coated, so no need to worry there.
I'm not sure how much you know about this, so sorry if you already know most of this.
There's nothing really too difficult in doing it yourself. Just make sure you have a good quality torque wrench and the torque specs, and most importantly a clean workspace once everything is ready to go back together.
Don't be afraid to really coat the piston and cylinder with oil while installing it. It's better that it is well oiled during the intial startup.
When installing the piston circlips (the clips that hold the piston pin or "wrist pin" in), make sure that the opening in the clip is at either the 12 or 6 o'clock position. If the gap is anywhere between the 1 and 5 or 7 and 11 o'clock positions, the inertia of the piston traveling up and down can actually compress the clip and dislodge it from its groove in the piston. Then the pin can work its way out a little and cause some major problems. But if you are installing the "spiral lock" clips, then you won't have to worry about this.
Also, make sure that you take the piston in with the cylinder when you get it bored. That way they can bore to the physical piston size plus the needed clearance.
There's a few other things that will probably come to mind that I'll try to add for you.
post edited by mud_dog450 - 2009/10/13 23:04:01