Ad tech putty isnt available in Canada so I used marine Tex as its shear strength is more then either substrate it should work. The 6mm hex will strip the top of you dont insert it perfectly straight. I added 3m 5200 to the thread of the anchor. This repair is easy to perform. Im highly confident it will hold. On s side note cat service was right on top of this, shipped the product immedietly with a hand written note on the process. All as described with the addition of 3 the 5200 I can only add that cat when shipping this repair should insert the rear seat screws also as they will shear if the anchor fails. Either that or its Time for a diet Thanks for the info and thanks Richard Milo