aussie I think you are getting excited about the wrong thing rather than having nothing to get excited about. I think the most likely place for the problem to be, is in the linkage that connects the forward-reverse control pedal to the forward and reverse clutches. This linkage has an adjustment at the rear of the pull-rod that runs from the front pedal pivot to the link at the back that operates the clutch fork between the two clutches. The adjustment is a pair of locknuts on a thread on the end of the rod. It is possible that you can reduce or overcome the problem by adjusting these locknuts, but before you mess about with them it would be best to look at each part of the linkage itself, to see whether each bit of it is working through a proper range of angles.
I said that I think part of the linkage might be on the verge of going over-center. What that means is that the lever, for example, attached to the side of the control pedal, works through a range of angles when you work the pedal. If the linkage is properly set up, most likely the range of angles for forward will be much the same as the range of angles for reverse. If, by bad luck or bad judgement by someone who has adjusted it, the range of angles is not the same for forward and reverse, you may find that the link lays right down when you push the clutch pedal hard in the forward direction, so the lever and the push-rod are nearly in line. If that is happening, you need to adjust the lock-nuts on the other end of the push-rod so they do not get nearly in line even when you push the pedal with full force. Then you need to push it with full force toward reverse, and check that it is not coming close to getting in line with the push-rod at that end of the adjustment either. Most likely, with correct adjustment it will be about halfway between those two extremes.
There can also be similar issues at the other end of the push-rod, in the linkage connecting the push-rod to the clutch fork.
Before you adjust or change anything, can you please post some pictures of the various linkage pivots, at the two ends of the pedal movement (forward and reverse)? Then we can see if my first guess is right, and it will also give us a comparison with what it looks like after adjustment.
I'm guessing that there may have been some amateur adjustment of the linkage - someone may have messed it up, trying to reduce the pedal force that you need to apply to make it go forward. This sort of thing seems like a good idea at the time, but turns out not to be after normal wear occurs in the linkage.
