If you ask Chaparral, they will tell you to contact your dealer.
Your dealer will tell you that they can't get anything for a boat more than a year old.
As already mentioned, that is underpowered.
If the boat is otherwise in good condition, and at a good price,
you could always sell the outboard if it is too small for you.
A thing I saw a lot when I had a similar boat was the skier was trying to pull themselves up.
They need to stay scrunched up with the tail of the ski directly under their butt and wait for the ski to pop them up.
I have seen several big and strong people prevent my boat from reaching planning...
That forum is absolutely worthless. That is why I ended up here.
And I know from experience that if you ask the factory a trailer question
they will advise you to contact your dealer.
Could be the IAC, and it could be quite a few other things.
For example, I have had to replace my IAC once.
But my water pressure sensor has had to be replaced 4 times.
That is fairly common on boat trailers around here.
I never looked closely at mine, but it appears to be some kind of plywood, covered
in bunk carpet and bolted to the frame and fender with a few welded on tabs.
Used Merc High Performance in our OMC stringer mount for years.
My favorite boat mechanic at the time used it in everything.
He said it was the best, with the added benefit of only having to stock one kind of lube.
The fuel sender should be inside the fuel tank.
You would get to from the top, approximately in the middle.
If I ever have to get to mine I will have to cut an access hole.