I'm having a mare with my car aerial and need help please! The original electric one was broken by the monkey from National windscreens aged ago and I've tried 2 others that worked but have rusted away. I've got a new rubber whip type that has been an absolute bustard to fit due to the curved wing and very limited access, it's in but all I get is hiss on FM! If I touch the base of the aerial it picks up fine even with the whip bit unscrewed, it doesn't have the spiked washer in contact with the wing as I had to make some spacers up so would this cause the problem? Can I ground it at the radio end as I'm not taking that aerial out again! Thanks for any help.