I did this several years ago and it has been well worth the investment. I have the OGF and it is going on 15+ year old. Till recently it was working great. It started having trouble a year or so ago. It is not level anymore and the machine is jumping the tracks. I have been able to rig it to work, then the machine started having trouble and I took it in for repair. Now the darn thing (frame) is giving me trouble so for now it is time to take it down and built a good solid base for the legs so they cannot come of of level and not have any slack or movement. Once I get all this done I will put the machine back up but until then I must save my sanity and take it down. Glad you decided on the metal rods you will really like how smooth the ride will be.