Find->Replace and Padding Track Length

Two things I could use some help with...

Is there a simple Find->Replace option that doesn't depend on using regex? Let's say for instance that every title ends with " (Instrumental)" and I want to remove that from every title, including the leading space. Is there an easy way to do that?

Unrelated, when using the Tag - Filename conversion I'm wondering if there's a way to conform the padding of the track numbers so they're all the same number of characters. So if I had an album that was 5 total tracks and used the Tag - Filename conversion with %track% %title%, the resulting filenames would look like:

1 Track One
2 Track Two
3 Track Three

But if I had an album that had 12 total tracks, now we pad those initial tracks with a leading 0, such that:

01 Track One
02 Track Two
...
11 Track Eleven
12 Track Twelve

And if I had a really long album with over 100 tracks, we'd need even more padding, such that:

001 Track One
002 Track Two
...
101 Track One Hundred One
102 Track One Hundred Two

Hopefully what I'm asking makes sense. Thanks for the help!

I can help with no. 2:

If you have %totaltracks% present in your file(s), you can use

$num(%track%,$len(%totaltracks%)) %title%

This reads: pad %track% with leading zeroes, until digit count matches that of %totaltracks%; and %title%

You can also find a list of available functions here:

Hope this helps.

Create an action of the type "Replace" for TITLE
Original: (Instrumental)
Replace with:
(leave empty)

More about actions, see the documentation: