I am having engineered hardwood installed in my upstairs a couple of areas at a time. The first installer provided by the company did very nice work and I was very pleased. Today they sent a different contractor to do the second part, two more rooms, and my wife and I are very disappointed. On the 2nd portion of the install there is crackling virtually everywhere you step and on the first portion, by the good contractor, there is almost no cracking at all. They did use different uderlayments. On the second portion there are also multiple end pieces of wood that they filled in with one inch or less fragments to hide a sizable gap. My shoe molding will not cover some of these gaps even after the put in these fill pieces. I am using the narrower shoe, maybe 7/16ths, but if I went with 1/2 inch I could barely cover the gap. These end pieces are also not securely in place as I can flick them loose with my finger. I also noted that they only stapled every 8 to 12 inches, whereas the manufacturer reccomends every 3-4 inches. Given we are paying $11k for product plus intstall on 1300 sf. are we out of touch firing this 2nd contractor and asking them to redo this defective area at their cost? Can the boards be salvaged as the material cost alone is $1500 to $2000.