First off, I doubt a shop that sells TG stuff is going to tell you weather or not they have "comebacks" they want to sell stuff, and if they are selling TG then they aren't going to cringe at selling something they know isn't the best. Secondly read this, clearly TG shops are not past lying to their customers...
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"While out wheeling just this past weekend, a gentleman approached Marlin and I and said that his Marlin Crawler Dual Ultimate was making pretty bad noise on the highway.
So we did the basic run down explaining how with an increased number of moving parts there will be an increase in gear noise, but that it should not be louder than your tires......then we began troubleshooting... Do you have a CV joint on the rear driveline? How good is your t/case mount? Is the shifter base rubbing against the cab? etc, and this guy, who was really cool, said that everything is fine and that it just started making this noise a couple weeks ago and the unit had just been installed not too long ago.
Well, long story short, Marlin crawls under his truck to take a quick look, and it turns out that he has a Trail-Gear, Inc. dual case adapter and presumably Trail-Gear, Inc. low range gears as well because the gentleman had these parts ordered and installed at the same time by a non-Marlin Crawler business.
Marlin said, "Well Sir, to be honest, this is not even my problem. You have a Trail-Gear dual case in here, it says Trail-Gear right on it"
And the gentleman replied and said, "Oh no, this is a Marlin Crawler Ultimate setup, it said so right on the receipt." "
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Good luck!