This is making me crazy!
I know, in general, that a bgdkft letter following a shva nach (silent shva) will take the dagesh. And I know that there are exceptions, for instance when dealing with a construct form of a word such as in birchot - the middle chaf does not take the dagesh. So far, so good. I also know that a shva under a letter following a shuruk at the start of a word is considered by most to be shva nach. But I cannot figure the word urchush spelled shuruk-resh with shva-chaf with kubutz-shin. וּרְכֻשׁ
Anyone have an explanation? I have looked so hard my head is spinning. Thanks!