Do any of you run blind levels where the small blind is not half of the big blind - even though there are chips in play that would allow it to be half?
I recently played in a tournament at my local casino. I came in 4th place out of 75 entrants with only one buy in.

I really liked the structure, except for a few weird small blinds.
The first three blinds were:
100/100
100/200
200/300
Since there were no 25 value chips, these blinds seemed acceptable to me. The next five levels were normal:
200/400
300/600
400/800
500/1,000
600/1,200
But here's where it gets weird:
800/1,400
1,000/1,600
I don't get it. Why not use 700/1,400 and 800/1,600? Is there a logical reason for this? Is there a TDA recommendation to do this, or better yet, to not do this?
After this level, the 100 chips were removed. So the next levels were:
1,000/2,000
1,500/2,500
2,000/3,000
2,000/4,000
3,000/5,000
I'm OK with the 1,500/2,500 level since there aren't any 100 chips, but why 2,000/3,000 rather than 1,500/3,000 or 3,000/5,000 rather than 2,500/5,000? The 500 chips were removed after this level.
The next 6 levels were:
3K/6K
4K/8K
5K/10K
6K/12K
8K/16K
10K/20K
Considering the lower weird levels, it surprised me that there weren't similar weird 8K/14K and 10K/16K levels. On the other hand, I busted out during the 5K/10K level. I'm taking the next levels from the structure listed on the website, so I can't be sure what was actually played.
But it really has me scratching my head.
For the record, this was a Big Blind Ante game. The ante was always the same as the BB. Could that have anything to do with the wierd small blinds? I would think not.
Those weird small blinds confused several of the players, as well as a couple of the dealers, so I gotta ask, why use them?