The Mac is to big to deal with in any situation. Too much dead weight. No real benefits of using it compared to the Makita other than if the Mac blows up I don't car it cost me 30 dollars where's the Makita was $300. So these new cuts are with the beat up husky chain and bar on the Makita. Go figure ..it works better. I have the 20 inch bar on the husky. The 038 didn't do great milling but the chain isn't in good condition either. I noticed it needs attention. I don't like all these full chisel chains. They don't stay sharp longThe kerf will be bigger with that, but filed right, should still give a decent flitch.
Your latest stuff looks decent. Try working that chain back to ~ 10 degrees as you sharpen it.
If the saws will do dual duty, get 1 for milling and another for crosscuts