Leslie 21h distortion --Its the upper driver

[hammondcv]

UPDATE-- I've have the local tech to look at the leslie and he said that there was definitely a problem wiht my Jensen v-20 upper Driver. He suggested that I replace it. He also suggested that I replace my 15'' woofer. The woofer inside was not stock and very questionable. As im now in the market for driver and 15''. I would really like some advice and information on the various ones out there. I keep running across the atlas pd60a driver. Is that the best sounding (for Gospel music?) I also see that there are screw on and bolt on drivers out there. Whats the difference. Whats the difference between the v20 adn v-21? the replacements I see are usually in reference to v21 replacements. In referernce to the 15'' I am interested in a deep low bass sound.

At the end on the day I want to make a good purchase not compromising the great sound on the 21h

Thanks

johnny