im pretty sure that your %'s are just a little low, but i dont want to argue, i love your guide. it was a great read, probably the best i have ever read at all, first of its kind that i have read haha. im pretty sure that the %'s are more along these lines though: (note i am providing 2 seperate and dependable sources)
http://www.jpitems.com/diablo2mfguide.html#AItem Quality Probability Based on MF% - this is where i got this one
Character MF Level Magical Rare Items Set Items Uniques
0% MF 0 0 0 0
100% MF 100 100 100 100
150% MF 150 146 145 141
200% MF 200 185 183 171
250% MF 250 220 215 193
300% MF 300 250 242 211
400% MF 400 300 287 236
500% MF 500 340 322 253
750% MF 750 412 382 280
1000% MF 1000 460 421 295
1200% MF 1200 494 448 305
1500% MF 1500 520 468 312
*In Diablo 2, MF only effects item quality, not quantity of items dropped
http://www.diabloii.net/items/modifiers/magic-find.shtml#percentages - source
Magic Find Magical * Rares * Set Items * Uniques *
0% 0% 0% 0% 0%
100% 100% 100% 100% 100%
150% 150% 146% 145% 141%
200% 200% 185% 183% 171%
250% 250% 220% 215% 193%
300% 300% 250% 242% 211%
400% 400% 300% 287% 236%
500% 500% 340% 322% 253%
750% 750% 412% 382% 280%
1000% 1000% 460% 421% 295%
1200% 1200% 494% 448% 305%
1500% 1500% 520% 468% 312%
these are just the quick reference numbers, so the ones in the middle are missing, but it is different from yours by a good amount in both examples.