Almost ready to pull trigger

[t mac]

Hello All. I had a sea trial today on a boat I am interested in. There were some things that I saw that I liked and some things I saw that I disliked. More on the good later. I have not purchased this boat yet and I am not going to unless I can get an idea of what the issue is.

The boat has a 4.3 I/O and it is suspiciously clean. I mean you could eat off of this thing. Once the boat was up to running temp. I noticed that one of the manifold/risers was hotter then the other. Signifigantly so. Like a difference of 40 or 50 degrees. Why would that be? If I need to replace then I will cross that bridge in negotiations. No smell of gas, no ping, no knock, accepted throtle with no issues at first but then it wouldnt rev over 3200 rpms. WOT would only get up to 3200. Moments before that it was stealy cruising WOT at 4800. Why might this be? Any thoughts would be great.

I am slightly mechanically inclined so fixing some things shouldnt be an issue.

Last. I just wanted to tell you all thankis for the warm welcome.