Thanks.
Badtastex i need to find time to remake part of the rail hinge as I've lost the rail attachment bit, think my autistic kid posted them down the mft holes he is defenitly drawn to them. [unsure]
Neilc, the plastic works real good sliding up and down, wouldn't want aluminium on alu sliding. The back extender most defenitly could benift from being alu to stiffen and accuracy.
Woodright, suppose I could live with been a red kneck. [tongue] I grew up on farm in SA, taught me to make do.