So i've been running tubeless for 3 years - mostly with Scwalbes on 26" wheels. Never had a major issue - perhaps the odd sidewall problem, but punctures on the tread part of the tyre have mostly been sealed with Stans while out riding.
I bought a 29er recently - bought a racing ralph snakeskin for the rear. 4 weeks in I've now gone through 2 racing ralphs and cut short 4 rides in total now. Each time the wheel has punctured all the sealant - and I put plenty in - sprayed out and failed to seal. 1 tyre I binned after failing to get it to re-seal with new sealant when i got home. Not looking too promising with the second tyre to the point I ordered a Continental online last night.
I shook the crap out of the sealant bottle before putting the sealant in.
What's going on? Why all of a sudden am i having a 'mare with tubeless?