All the RV's we had over the years we had the slides makes some noise but not bad. Suggest you go to another location and try the slides on another rig to compare. We've had to have our slides in the past adjusted, it's not a big deal if that's all it is.
The trailer we have now has 3 slides and we use it a lot and I guess we're use to it, but the noise is not much. And so far we've not even had to get them adjusted.
2011 Cameo 34SB3
2014 Ford 350 King Ranch, Trailer Saver BD3 Air Hitch, Mor/Ryde pin box, IS Suspension, Disk Brakes
Nights Camped in 2012 - 142
Nights Camped in 2013 - 186
Nights Camped in 2014 - 185
Nights Camped in 2015 - 231
Nights Camped in 2016 - 162