Black areas on new cattleya-Help!

[silken]

I just got this cattlye from Crystal Star Orchids who in turn got it from Sunset valley Orchids. I suspect it has been bare root and wrapped for likely a minimum of 1 1/2 weeks

I got it bare root, very wet and wrapped in saran. There are several OK roots and the rest are queastionable. I cut off some dead ones, cleaned them well and soaked in water with KLN and a bit of SuperThrive and sugar. Then I let them have some air overnight as they were already saturated. But I noticed that the lower part of several leaves and those pseudobulbs have black areas. It is firm to the touch and I wiped them with hydrogen peroxide. I don't have Physan or anything as we can't get it here.

any ideas of what this is. I am leaving for the weekend to the orchid show in Calgary tomorrow morning so can't even keep an eye on it. Guess I will also put some sulfur powder on it and keep it away from everything else unless someone has some ideas.

If not for the soggy roots and this black, the plant looked fairly substantial and healthy. 2 small new growths, but one was broken off