I bought this seat off eBay, Iím sure those looking have seen the same one. Well the construction seems solid but the springs canít handle my weight. Are there any mods that you have used to account for this? Are there stiffer springs that you have found that worked? I donít want to stuff a tennis ball under the seat but I may have to do something. Iím going to put a lay back seat post on the bike which may help when the weight is distributed differently but I donít know.