% of Remaining Portfolio Spending Model Issue

[ProspectiveBum]

I'm not sure if this is a bug, or user error, but I haven't been able to figure out how to do this:

1. In the Percentage of Remaining Portfolio spending model, Firecalc seems to use the targeted annual withdrawal amount and your current portfolio value to determine the percentage used for future withdrawals. This doesn't seem to work well if you're some years from retirement (e.g. expenses of 75K with a current portfolio of 400K, and targeting 2025 for retirement). Is the ability to enter a fixed withdrawal percentage a for-pay feature?

2. Given the entries above, it seems that the year-by-year spending starts immediately, rather than being 0 until the target retirement year. Is this a bug, or just not supported in the "free" version?

Firecalc is a great tool, so I'll likely be chipping in to support it's development costs, I just wasn't sure if doing so will get me what I'm looking for above.