OK, a bad rectifier tube took out the fuse in my ST70. I'm suppose to replace it with a 3A Slo Blo fuse. I went down to a store today and couldn't find any 3A fuse. Closest was 2.5 but I didn't buy any. I'm going to check some more stores for 3A and my question is, how can I tell if a fuse is Slo Blo or not? I don't see it written on the package.