You need to get some seedy brick, sterilize your equipment with foaming bathroom cleaner (it's great stuff- Scrubbing Bubbles works like a charm on prop equipment), and do a test run of bagseed, up to about week 3 when they become less vulnerable, to prove that your technique is correct.
BAAAAAAG SEEEEEEED....
No matter how hardy a strain, all seedlings are susceptible to rot in poor conditions.