Couple of kitchen floor units are cheapish flat pack. Cant afford to replace. Over time the little plastic adjustable legs seem to have come off and then re screwed to the unit. Loads of screw hole attempts needs a fix. Could I get some chunky wooden blocks with a bit of height adjustment that may be better than those spindly plastic legs?. Any DIY ideas?. Hopefully chunky area may not need screwing the legs to chewed up base of units?