Hi Roger,
As a longtime JV16 powerTools user ,I ,as well as many other users ,can tell you,that used judiciously,you will have few problems using it.
Yes there is a learning curve (getting used to the program)but once you get the hang of it,you'll be OK.
Don't forget,you can always restore (undo) deleted entries, if you have chosen to do a backup at the time of deletion.
I suggest this the program,pick a few insignificant entries,select backup before deletion
then delete.(write them down if you want)
Now you go back and do a restore of those entries.
Check if they are in the right place etc.
Once you're comfortable that it's alright, go on to more extensive cleaning.
For myself I still scrutinize what I'm deleting,but that's me.
On occasion some entries might be used by a program that was not recognized by jv16 PowerTools,
however,no sweat :) just do a restore of those entries.
Hope this will make you more comfortable.
Pete.