Rapid rooters...slow germing

on Feb. 21st I put 2 x Tangerine Dream, 1 pineapple express, 1 grapfruit and 1 sugar black rose into paper towels.

On 2/24, 1 TD, grapefruit and black rose cracked. So I put directly into rapid rooters in humidty dome. 2 days ago, they still had not broke the surface so I was concerned and looked at all three seeds in rooters and showed that taproot had started to take in the rooters so I left them thinking that they are just taking a while. checked this morning and still haven't broke through yet. I have 6 26w CFLs (6500k). Should I be concerned at this point yet?

Also, 1 tD and pineapple express still haven't cracked in papertowls yet...it has been 9 days...Should I be concerned with this too? + rep for help.

i had some papaya seeds from nirvana that took over 2 weeks to crack in rapid rooters and i've read of even longer periods.

I have never had a seed take longer than a couple days after cracking in paper towel with a taproot poped out then into the readyrooter kept moist under my floro's.
So far Ive only done many bagseed (17) Whitewidow (2) Carmalicious (2)
be sure your readyrooters stay moist and you should be fine.

Dunno why yours are taking so long. Even clones only take about 1 week to root into the readyrooters.