Don't know about oversized pads. I just made up a wood platform for landing gear. Is 13X13 inch wide by 8.5 high. Rope handles for easy handling and eliminated the lumber yard in truck. Used 2X4's on bottom then built up with 2X2's with 3/4 ext plywood cap.
Light,strong and takes little space in truck.
The 8.5 inch elevation seems to greatly reduce side sway as opposed to having the gear fully extended. Has worked out well. Pads are original.
For rear stabilizers, just fastened together seven of those yellow (I call em leggo boards) blocks from Camping World. Put handles on them for ease of handling. Beats handling blocks. Light, easy storage. Would not use these on front gear as metal can eaisly slide on them.