It is normal for there to be no synchromesh on reverse. Has been since Mr Benz was a lad.

Absolutely so. Synchromesh is to help engage a gear while moving - it is normal to only engage reverse when stationary, so not needed. Of course if the OP has a habit of revving in neutral before trying to get reverse he will get a nasty crunching noise because the cogs in the gearbox will be spinning.

if there is a fix apart from the ones already mentioned and the fix from Ford (As was told on the phone to dealership) was to take the transmission off and slap more grease in

This doesn't ring true either. Garboxes are not filled with grease, but with manual transmission fluid (which is usually something like a 30 weight oil with friction and extreme pressure modifiers). Can you illucidate on this point?

It's important when changing into reverse that one does so with the car stationary. One should pause at stationary with the car in neutral before pressing the clutch and then move gently into reverse. If the gears are still spinning fast from forward motion crunching is likely to follow.

Try changing the mtf. I used Torco RTF in my Rover Turbo PG1 box for 70k and it was excellent. I've recently fitted Red Line MTL into my Saabs F40 box and can report an improvement in running and shifting (it's also popular with Scooby owners). You're looking at about £50 for a 'box refill but it's money well spent imo.