Yes, you can burn your lawn with any decent fertilizer with higher nitrogen levels but honestly, you’re only going to do damage if you dump a bunch in one spot. I never worry about getting it exact. I have used 2x the amount in spots trying to use up the end if a bag and it just grows faster. To be safe, lower the feed rate and do more passes. Also make sure your spreader stops dumping product when you stop/let go of. The handle
3.2 lbs / 1000sq.ft. is only .32lbs of Nitrogen. You threw down close to .75lbs of N. You are all good with that app as well, mah man.
Can you burn the grass with it?
Which product
Yes, you can burn your lawn with any decent fertilizer with higher nitrogen levels but honestly, you’re only going to do damage if you dump a bunch in one spot. I never worry about getting it exact. I have used 2x the amount in spots trying to use up the end if a bag and it just grows faster. To be safe, lower the feed rate and do more passes. Also make sure your spreader stops dumping product when you stop/let go of. The handle