Hi Sammy
I don't think there is any major problem with the suspension mounting brackets.
Some people have had to pack the brackets out a little ..... This seems to average about 3mm for most.
I can,t really comment accurately on other builds but on my own, here's what I found :
I took great care to make the chassis as close to the book spec as humanly possible.
When I made the front suspension bracket mounting jigs, the measurements were checked & double checked for accuracy.
The brackets were clamped in my jigs & put into place .... The rear most brackets were sitting nice & snug as they should .... The brackets on the front frame had a gap, aproximately 3mm on the front lower & slightly less on the front upper.
I studied the problem for a while and could possibly see where the missing mm's went.
Possibly during construction of the front frame .... The intersection points of the front frame sides in relation to the bottom section .... I believe if I had made the front frame correctly/differently, I would of had no gap at all
I would love to do a drawing to explain but I am a complete moron when it comes to cad software
With a little luck, I have made some sense !!??