You have to rethink your approach on how to use those two.
The 42 is more of a defensive supression support, with a wide arc and good AoE supression.
The Maxim is more of a mobile agression unit, which can be used alone (a-move ftw), or in conjunction with other units to get the upper hand in engagements.
Both have similar veterancy, with the major difference in their ability. 42 can go nuts with incendiary rounds, and Maxim becomes even more mobile due sprint.
- in a nutshell.
A second 42 covering the front one is usually a good idea. You want infantry around to clean up supressed units, spot, and flank protection. Also wire helps a lot in bottlenecking.
Nevertheless, both Maxim and 42 want to be repositioned once in a while. Just putting the buzzsaw somewhere won't magically deny all infantry attacks.
+1
IMO they are both in a good spot right now. Never change a running System