@Crane: The most recent fixes created new solutions
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Jailbreak: Here is a completely new approach, solving the level in 4 minutes. Even if 8_1 is most likely not the intended solution, I like it quite much and would not mind if this solution is kept. As far as I remember, it is my first solution without using builders to create some kind of wall to turn lemmings around.
Solution 8_2 is much more usual and less elegant.
Btw. even with allowing for solutions like 8_1, this level is very hard and interesting.
Overflow: Two more solutions. One created by the last fix and one similar to 7_2 (but still having a basher spare).
@Mobius: Some replays for you as well.
BlockAFloater: This solution has a better chance to be intended.
Brokeback Mountain: An excellent level with a brilliant solution, even though it is possible to save one lemming more than required while having one builder spare. However I doubt, that removing one builder or requiring 97% would improve the level.