[blykins]

Well if you've tried to match the revs when you downshift and that doesn't work....it sounds like an actual mechanical problem inside the tranny....not talking about a blocking ring problem or broken gear synchro teeth...but maybe a bent synchro key...Something that's physically forcing the synchronizer out. Could be a bent shifter fork too. Should be easy to spot if you got it apart.

Don't mean to sound anal or anything, but are you really giving it a good rev before you try to move the shifter? Sometimes the speed differential between the synchro hub / blocking ring and the gear itself is too great for it to just slip right in.

I have a buddy of mine that has a 2003 Mustang Cobra....I've seen him repeatedly running about 55-60, mash the brakes to turn into a driveway or something, get it down to about 25-30 in 3rd or 4th gear and then try to mash it up in 1st gear....then he wonders why it fights him so hard...he just keeps shoving harder. Stuff like that just irks me.

I'm not trying to say you're that inexperienced, but I'm trying to think of possibilities.

Has it been having this problem for awhile?