so, no one has any ideas about what to do with the road wheels on the M-29?
I'm still a little unsure of the issue you have. Am I right in assuming Monogram give you one piece wheels that are like a tube and that is the issue?
If so, What I have previously done, whilst a little time consuming, came out quite good. I presume you have a razor saw, as you cut off the front and rear, so....
1) Find a study flat board
2) buy some 'Post it' notes narrow enough to fit between the saw teeth and the top of the saw (they need to sit flat against the saw face)
3) get a good strong clamp
see where I am going here?
Okay, work out how many 'post its' you need so that when you sandwich them between the saw blade and the board, the teeth are just high enough off the board that they are along the centreline of your road wheels when they are placed flat on the face of the board. Solidly clamp the saw blade to the board with the posit-its between, so the teeth face the centre of the board. Then place a road wheel flat on the board and move it up to the blade, and carefully rotate the wheel against the teeth and cut into the wheel until you have a grove the depth you need.
If the saw cut is not going to be wide enough for what you need it to be, then instead of centering the blade, set the depth so the distance between the board and saw teeth will create a road wheel section that is the right width for the outer wheel segments. Then set the height again to make the cut for the other segment so the centre groove is the correct thickness.
To make the two wheel segments you now have look like 4 segments, if the razor saw is too wide for the gap between those wheels instead of a saw blade clamped down, use a scriber blade (one that removes a thread of plastic) or a new scalpel blade clamped down to make a thinner groove. You do not need to go deep with these grooves as the pairs were close together. Again set the height to scribe where you need. TIP: Clamp the blade so only the very tip protrudes at a slight angle over the post-its. That way you can push the wheel up against the post-its and help hold it in place and make it easier to scribe against the tip.
In regard the scriber blade I have one of these tools and the blades can be acquired separately:http://www.arcair.com/tnt1/101-200/tnt105-OlfaP-cutter-Aleong/00.shtm
Failing the above, there is always the option of submerging the vehicle in sloppy mud: