I installed a garage door a while back. However the runners on both sides of the door where the wheels fit in are about 3" to short. Are there any extensions you can by for these runners? The bottom wheels keep falling out of the runners when the door goes done. Thanks for any help.

I am renovating a house in the arts & crafts bungalow style. I have designed a wooden door to replace the existing one. There are old style springs on the current door that I would like to have replaced with safer "covered springs" style so that children cannot get their fingers, hair, etc. caught in them when they are removing bikes, etc. from the garage. Do you have a selected list of safe spring venders? This home is in the southern California region if that helps. The door is a one car garage door. Have only been able to find complete door units -- not interested in their styles. This door will have an automatic opener, opening up, although visually, it will look like carriage doors that slide open. Thanks, in advance, for your suggestions.