"I find I carry my weight further forward in the quickstep than in the foxtrot is this normal or is my weight to far back in the slow foxtrot Thanks?"
If you can name where you are carrying your weight in your foot, that must mean it is in approximately the same place for a long enough period of time to be worth mentioning. A little consideration of dance actions will show that there's really only two circumstances where that should be true: hesitatations, and places where you are only using the toe (which really means the forward part of the foot in general).
Any lowered step which involves the heel at either the beginning or the end should see your weight moving smoothly and continously through the foot enough that you cannot be said to carry your weight in any particular part of the foot for that step at all.
However, it is extremely common, especially for the men, to try to slow down a foxtrot to match the music by keeping the body weight stable over the foot for a brief period. This is quite common, but also quite unworkable as it means that you must either stop your body movement (not very "foxtrot") or leave some body parts behind to balance those that do keep moving. Usually this is done by bending at the waist - leaving the hip behind while the top and the foot continue into the next step.
Many teachers will fault your for that habit, but extremely few will explain the underlying problem and how to fix it. A full examination of the technique of movement in the swing dances will show that the only proper way to slow down is to rise. Becuase of the direction in which our knees bend, we do not have any way to brake our foward motion without distorting our bodies out of a partner-compatible posture. We do have some ability to slow a backwards motion, but it has to be used sparingly as the person moving backwards would have to be the brakes for their forward moving partner as well, and we generally want to avoid exerting actual force on our partner's body - lead and follow is information, not push.
Since we cannot slow our lowering motions without deviating from proper technique, our only choise it to time our rising actions such that well executed lowering actions will have us moving at the right speed, and right timing relative to the music. Learn to do that and you will no longer think of carrying your weight at any point of the foot in the lowered steps of foxtrot.
One advanced case to contemplate is pivoting actions. Does the progress of the weight through the foot really stop during the pivot, or is that only an initial approximation used when explaining the rough idea of the step? Similarly, heel turns - are they on the heel, or does the weight travel back to one heel and then smoothly forward from the other?
Dave