I have a Multitrek 7200 (2005).
I believe the steering tube is 1-1/8 but in honestity I'm not sure, unless I actually pull it out and measure it. So in a way my whole discussion might be useless.
The adjustable quill on my bike is having movement. One of the socket screws on the left is stripped out and can't be removed. I have tighten the other one as much as I can. However the fork on the front is a cheap (spring only) suspension type and I really don't do enough to use it. It has movement inside as well.
My thinking is this. I was thinking of moving it over to a threadless headset and possibly going over to a carbon fiber fork. I see carbon fiber forks on ebay around 150 or so. The other issue is I see many of them don't have v-brake lugs, I'm assuming this is common? Does going thru this make any sense or should I simply just replace my quill and keep everything the same. I also understand that with threadless you don't get the "elevated" handlebar?
This is what I'm looking at on ebay.
https://www.ebay.com/itm/Redline-Carbon-Fiber-FORK-tapered-1-1-8-1-5-200mm-steerer-395mm-axle2crown/123031323219?hash=item1ca53d0253:g:16AAAOSwgptasE2j:rk:146
f:0&LH_BIN=1