[Gogar]

I had a similar situation with my wrench with my SC.

Removal of engine and tranny, take off all the easy bits, do all the usual seals, clean up and shine up, reinstall.

I had done it all before and did probably 85% of it, but he was around to make sure I didn't screw up the important parts.

I paid the regular customer price for all the parts.

I expected to pay full shop rate even though I didn't tie him up 100%, or even 30%.

I think my bill was about 1/2 or 2/3 full rate, and I was thrilled. I learned a lot and I didn't crawl around on my hands and knees in my garage.