Definitely don't bring up the "...or just claimed taxes" part again.
I keep two histories for printout. One is an entire work history that can be modified according to the employers needs. The other is strictly one for professional flying.
If I am wanting to do some work in a maintenance related field, my flying history isn't particularly important. I modify my work history to expand on what maintenance related items I've done, and minimize everything else. If I've flown for a company and turned wrenches for them, I describe the maintenance, but not the flying. I list it, but don't magnify it.
Conversely, if it's a flying position I'm after, I identify the maintenance I've done, but minimize it; I expand on the flying.
Any other work that's not directly related, I either minimize, or don't include. When attending an interview, I always have one complete work history that includes everything. I use that for my own purposes, to fill out applications, answer any specific questions that might come up, etc. I keep that history filled with every possible detail that might be asked, from salaries, to fax numbers, to any specifics that might in any way be relevant.
I always print out a copy of the specific history to give to the employer at the conclusion of the interview. It sometimes helps to include it with the application, as no application has nearly enough room to include all my former employment.
Many employers will want to know about all former employment history, including any gaps in employment. Be sure to have a copy that covers everything for your own reference, if asked. But for a copy to give to the employes, just list what's relevant. Don't include manager at the Red Lion hotel, or bartending...just what's relevant. While management may be useful experience, it's not really relevant to getting hired as a line pilot.