Thanks guys. I did just that. The process was a little back breaking but ultimately got it working. Just following up to help other if they want to replace the rails on their CNC. Started off by cleaning as mush as I could. Got lucky and ordered a set of rails and blocks from flea bay. They were almost the exact match but the rails were 12" longer. I cut them to length and now I have a couple of precision parallels left over. Not bad. Getting to the bolts to the blocks were daunting to say the least. Some modified stubby allen wrenches and a few ratchet ball hex were needed to open the blocks. Moved the table back and forth and got the rail screws out. Jacked one side of the table and slid the hole assembly out. This is where you have to think ahead which I ignored. lol With a smaller machine and rails being so long and heavy, I had to move the jack screws a few times. Slithered the new rail assembly into place and loosely bolted everything down. I got this, now to move to the other side. Feeling confident and experience on my side, I tackled the other side but karma had other plans. All the electrical and lubrication hoses run just above rails which made things a lot worse. Took twice as long but eventually got her all bolted down. Placed a granite square to see how perfect of a job I had done. Holy cow I was out of square in the X & Y by .003". Not acceptable, the bridgeport clone is better then this, so I loosened the bolts on the blocks to adjust the table but that made no difference. Then I got a brain fart, maybe I need to loosen the Y axis ballscrew nut assembly and re-tighten after it settles into its new position. Sure enough that did the trick. Opening the 6 bolts to the ballscew nut was a bitch. Seems like it was torqued to 1000f/lbs by a gorilla on steroids. Time to cover her up, fill her up with fresh coolant and push the green button, but not so. Swept the head to find out the head was out of tram by .002 on a 12" circle. Now what. Well, I had to open re-open the bitch side blocks and place shims and re-tighten them. Now I'm running within less then .0005 and I can live with that. Decided to just make some plastic counterbore covers with some delrin rems and it worked better then the cheap plastic covers that I destroyed while trying to remove them. All in all it took me 3 days and half a quart blood loss from busted knuckles. The trick is smaller hands with dexterity on both hands. Thnx