If you choose to execute adjustments for your Lem R3 then it is always a good idea to have access to a Workshop Manual for personal reference if you need to know simple methods to strip off a particular component such as the Drive Shaft and install it again efficiently.
Lem R3 Workshop Manuals offers clear specified diagnostic facts on your car or truck so if something is broken it can help you understand what the problem is and tips on how to correct it. You can then assess if this can be done on your own or in case the job is just too big you could book your R3 into a nearby car garage.
Lem R3 manual