It would be nice if you exposed unregisterRewardFromAllBlocks and unregisterAllRewardsFromBlock, possibly as removeFromAll(outputstack) and removeAllFrom(inputstack). And please update the wiki to reflect the new method signatures :)

Also reloading isn't quite working. Any removed sieve recipes get stuck when reloading.

Second this, also heat sources dont seem to register as well.

Check the latest build please!