I am SO UNHAPPY with the quality of the new Mega Rig products. My son loved all of the products in the past and would play for hours. I am not sure if you modified the materials you use, but they absolutely stink now. The old products you did (can't remember the exact titles), were amazing. They had so many working parts. Now, the wheels are attached to the units, the plastic is thin and cheap, everything seems to feel like it will break, and it limits the creative possibilities. I never write reviews, but this was my son's most desired gift he requested prior to the holidays. It was a total let down. Not worth the price at all. Go back to your old manufacturer or figure out what you changed!
I bought this for my 5 year old for Christmas thinking he would totally love it since he loves sharks and bringing toys to the bath with him is something he always does, The problem is that when you build a boat it doesn' stay together very well. If given the option of playing with it in the store first I would not have bought this for him. He does love the shark and plays with it all the time.