Hi the Cush drives in the back wheel hub of my tlr 200 are shot and wondering if its better to replace them with the original bushes or is it better to make them solid with alli bushes

The 250 has the rear sprocket bolted directly to the hub!

Seems to work ok.

Removing the Cush Drive can be done,

some bikes have something similar on the clutch instead of the rear wheel,

some bikes don't seem to have any Cush Drive on any part of the drivetrain

I have an OSSA MAR with a Cush Drive on the Crankshaft     { I have no idea why they fitted this ! }

I think the general idea is to protect the Chain / Gearbox etc. from shocks , so it cant do any harm and may extend the life of these parts.

the problem is when the Cush Drive wears you can end up with a wobbly sprocket etc. ,

if parts are easy to get & sensibly priced then probably easiest to leave as it is, if not then making it solid wont cause any major problems I would think

up to you really, hope this helps