I have been searching in vain for some 350Lbs /inch eye end shocks for my trike project. I bought some on E bay that were advertised as 350 pounds/inch and they were huge. I tested them and they were 700lbs/in.They were kg. rated., I have been on the net for days. I called progressive but they want to know what bike I have. I see people make reverse trikes and have correctly sized springs. Any ideas. Thanks