I don't remember much from the movie because it's been about 30 years. I've exhausted myself searching for every keyword and classic tubes over the last several years (off and on).
Not a ton of info but I remember one of the scenes had a guy with a tool belt on while he was having sex with a female. I remember the female saying (during doggystyle I believe) that "it feels so good I wish I could see". It was an outdoor scene by a pool, so the guy could've been a construction worker or something at someone's house.
The only other scene I remember is another guy/girl scene where the male was in a patient gown, where he had sex with the female. Im not sure if she was a nurse or not. The main things I remember is right before the guy stuck his penis in, he said "here I go". The female he was having sex with was moaning his name over and over, saying "oh Jonathan... Oh Jonathon".
That's all I have. I can't say that it is or isn't John Holmes. Not sure. I've searched all the keywords like:retro, classic, nurse, patient, oh jonathan, construction worker, here i go. I've checked year by year in the 80s. Tons of results just no luck.
Any ideas?