I live in Australia and have a 2900 scr bought it second hand been a effort to get but now it has arrived there are small things as you would expect In a second hand boat that need repairs. The horn doesn't work, Bimini frame missing some screws I need a new sink tap shower grate corroded that sort of thing.
Any suggestion in where I can sort all sorts of odds and ends for this boat as I want to keep it original as best I can.
All the things you mentioned are not Maxum specific so either a local marine supplier or one of many on-line sites such as Defender or Great lake Skipper.