I've got a new restoration project going and am wondering if the OEM front shocks on the TRX 250R can be rebuilt? I have yet to take the shocks off the machine so I'm wondering if it has a removable seal head like the rear shock? For some reason when the shock gets compressed too far it gets hooked up and doesn't fully rebound. It could be a slightly bent shaft--not sure yet. After searching the internet it appears the 400EX is a direct bolt-on replacement.