8ll Maxitorque ES grinding in low range

Please help. I have a Maxitorque ES trans and I'm getting a grinding noise in low range only. Noise sounds like gears are slightly too far apart to engage. I switch to high range and those gears work fine. Also it seems to be more common if I shift into gear after coming to a stop. Had the same issue before and found the bolt on the shifter fork in trans loose. Problem as returned but the bolt is not loose. Please help

 

Thank you. How would I go about checking the cross shafts. Not really sure what to look for.