I have this Sports Instruments watch/HR monitor which I like a lot. The strap however, has been a huge disappointment. The material cracks and break easy. They used a hard silicon instead of elastic silicon used on Nike watches. So now this company has been out of business. I can't get replacement straps anymore. I wonder if there're any companies out there make custom replacement silicon straps. The challenge here is the strap is conformed to the watch. Not just a simple dress watch strap. There're 4 bolts holding the strap. Any ideas?