Only just joined forum so I missed this. I have had one for a few years, very useful and as you say horrible without the deflector! My advice would be to replace the aerial with a "bee sting" mast as the original is too long and is easily snapped off due to the constant pulling it out of the way of long loads.
Just replace the aerial base, with the help of this forum!
All sorted now thanks Chris. I've already replaced the aerial for a bee sting type as I've a dab stereo and the old one wouldn't work it. Word if warning. Don't buy a cheap aerial as you get better reception wetting your little finger and putting it in your ear and your little toe in the stereo