you wouldnt need a new frame for the domains, just a new 1.5 headset, the domains might have too much travel for your frame though as there 180mm and you frame is 130mm recommended..what kind of bike is it? id agree with dez, get your forks serviced, marzocchis go forever if you get them services every so often, there pretty simple to work at too, theres plenty of demo on youtube if you fancy having a go at it yourself