Originally Posted by
jebejava
It's hard to find ST cogs nowadays as stock is running out. Have you tried looking on the Loose Screws site? perhaps some forum member will have what you need too. Otherwise, it's much, much simpler to buy a new freewheel.
+1 for just buying a new freewheel to meet your type of riding. If you're looking for a versatile freewheel for all kinds of elevations, I'd use Shimano's hyperglide 6 speed 13-34. You'll most likely need a new chain, too. Two weeks ago I just resigned myself and went from 5 speed to 6 speed so I could get that extra 34T. It seems like you already have a long cage derailleur (VGT) for the 34T cog, so no problem there.