I sure hope those Rubber Bands were the high quality 3M type and not some knock-offs ..Thank you so very much. I finally googled the problem last night after months of driving a 4-seater Sienna and was referred to your forum. The result? After failed diagnostics by 2 dealers (in the US and in Canada) and an estimate by the Canadian dealer of over $1000, I fixed the 60 and the 40 last night in less than 2 minutes with 2 rubber bands!! Thank you!!