Tallis Katan and Slichos

We know that slichos in Germany was usually said very early; before the time that one could make a bracha on a tallis. This is why German Jews put their tallis on by baruch she'omar - before baruch she'omar it was too early (See R' Schwab on Prayer). As far as I know, the German custom is that the congregation does not wear a tallis for slichos - only the Sha"tz. Today, when most say slichos at a later time, should one make a bracha on the tallis katan when putting it on in the morning? Personally, from the time that I put on my tallis katan until I put on my tallis gadol (during slichos), can be a solid hour. According to the MB one must put on the tallis gadol within a 'short time period' to have the bracha effect the tallis kattan, or else make a separate bracha on the Tallis katan. Hence the question; should one recite the bracha on the Tallis katan?

I'm pretty sure that according to Minhag Ashkenaz one recites a bracha when he puts on his talleis koton in the morning even if only a short time will elapse before he puts on his talleis godol.

Melech

Please clarify: The Maharil didn't make the bracha on the talleis koton because his hands weren't clean, or because he was putting on a talleis godol later?

Melech

Just to clarify - no matter how long it will be in between putting on the tallis kattan to the tallis gadol, one should not say a bracha on the tallis katan. Is my understanding correct?

I looked through the MB and could not find it. I asked other people, and they also quoted the same in the name of the MB. I actually found one or two pieces that seemed to imply the opposite. For the moment, I will say that I will keep looking - at least there is an idea out there that the MB says this...and I should be more careful to have the source in front of me if I quote it. I was also advised to look at the Debriciner Rav and Rav Moshe Shternbuch about the half hour, but as of now I did not. If anyone does, please post what it says...