Just a note in case you haven't run across this. Was at a client on 4.3.0.11 today who wanted to update 941 forms. Technically Sage has an update for this though if the client is using a service update prior to 17 (v4.3) they're SOL on using the 941 only patch and the must load the whole service update.
Typically (in theory) this isn't a problem. However in practice there are any number of issues including: Installing a service update requires exclusive use (The 941 patch doesn't), some service updates unexpectedly launch a data conversion utility, some service updates introduce bugs.
Something to think about if you have ""install 941 patch"" on your to do list for any clients. Double check their SU or PU level first to see if you need to allocate more time for a SU or PU install as well.