1st gear always seems to "pop" into second. All other gears are working perfectly and added trans fluid recently. Whenever i drive really slow like thru a drive thru or when i park the truck i can hear a "ding ding" bell like sound coming from underneath. Clink click click etc.. Any ideas? Is it safe or good for me to start the truck out in second and shift my way up to drive (automatic trans)? to avoid 1st and the "pop" into 2nd? Thanx.