Palomino question

I've been truck camping for many years and owned many brands I was considering buying a new Palomino 2910 I looked at them and other than minor fit and finish problems (caulking ect) It seems solid. Someone told me there was an issue with slide sag when this model first came out in 2013. has anyone heard of this? and if so has it been addressed by Palomino? please no pontificating about other brands I've owned many different ones all have good and bad points. Thanks!