Have any of you engineers , mechanics or heros sucessfully managed to refurbish a set of small trailer independent suspension units by way of grinding off the square carrier tube and mounting plate and replacing them ? I have two pair of units in need of this type refurbishment . Today I carefully cut off the crud metal and square retainer tube on one unit . The rubber shock absorbers/ springs are almost " D " shaped . I have the replacement metals to hand but am wondering which way will be best to insert the rubbers . I have marked which side it came from and which part is going to be upper most. Once I have filed out any manufacturing burrs in the square tubes , made leading edges for the exercise. etc.. the drilled out mounting plate holes assembled it correctly then welded them up with my trusty stick welder ( 5 mm wall thickness ). Is it feasiable to clean and use swarfega on the rubbers , insert two on the same side ? . Then compress the rubbers , rotate the square shaft , to see If I can slide the remaining two lubricated rubbers in place . I don't know how easy or difficult this may be. Any advice you can offer is most welcome .