Heatsink Lapping

I know I have fairly inactive here lately, not that I assume many of you guys noticed me here anyway, but I was wondering if anyone here had tried "lapping" their heatsink before? I stumbled on a review on a lapping kit at SystemCooling.com and they seemed to like it so I decided to buy the kit from easypckits.com.

I asked Scottchen, since he seems to be the resident overclocker here, if he had used lapping before and he said no because waterblocks don't see very good results with the process (he gave a reason but I forgot what it was.) Anyway, in case you guys haven't read anything on it, it's basically just sanding the heatsink to make the surface more flat thus allowing for a more uniform thermal transfer between the processor and the heatsink. I used the kit on two heatsinks and saw a 5'C drop.

14 bucks for a 5'C drop seems like a good deal to me... only thing is it took me around an hour and a half to go through the whole process. Has anyone else here tried heatsink lapping before? What were your results?

AMD 64 3200+ (939) (Working on overclocking it)
MSI K8N Neo2 Platinum
1 GB OCZ El Platinum clocked at 2.5-4-4-10
EVGA Geforce 6800 GT
2x WD Raptor 74GB Raid 0<P ID="edit"><FONT SIZE=-1><EM>Edited by BeyRevRa on 12/20/04 01:53 AM.</EM></FONT></P>

I'd be happy with that!

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Scott is hard to come by, I write him emails and catch him on MSN every once in a while for a couple of minutes. I think I badger him with too many questions . Anyway, ya the kit was 14 bucks but it came with a peice of glass for you to use as a smooth surface and a tube of arctic silver ceramique so in reality the sand paper didn't cost me much. I'm always OK with having another tube of ceramique sitting around too .

AMD 64 3200+ (939) (Working on overclocking it)
MSI K8N Neo2 Platinum
1 GB OCZ El Platinum clocked at 2.5-4-4-10
EVGA Geforce 6800 GT
2x WD Raptor 74GB Raid 0

I was actually wondering if anyone lapped Zalman coolers because they have kinda a... unique shape.

AMD 64 3200+ (939) (Working on overclocking it)
MSI K8N Neo2 Platinum
1 GB OCZ El Platinum clocked at 2.5-4-4-10
EVGA Geforce 6800 GT
2x WD Raptor 74GB Raid 0