I have built quite a few of the Italeri HEMTTs and haven't really encountered any fit issues. They are not the best detailed kits, but are not that bad. With a cheap Eduard PE set, they can look really good.
I just used the basic HEMTT parts from the M1120 LHS to convert an
M983A2 HEMTT tractor as I used the LHS-specific parts on my ongoing
M1074 PLS.
One issue I see with yours (and it may just be for the pics) is that your wheels are mixed up. The shallow wheels are for the front. The deep wheels with the ribbed centers are for the rear. All your wheels are missing the center caps as well.