Second conditional + that clause-tense

Hello,

I have these sentences:

1. "What would you say if I told you that I am/was here?"

2. "What would you say if I told you that I have/had never played football before?"

In my opinion, you can choose both versions in the first sentence, but the meaning will vary-with "am," it means that the speaker is perhaps calling someone and saying that they are at some place, whereas with "was," it means they were at some place at some point in time.

Again, only in my opinion, in the second sentence, only the version with "have" is possible.

However, I searched on google for similar sentences and found some results where "was" was used even though the context indicated that it was the present tense (for example, "What would you say if told you that I knew the secret formula to success?").

I haven't found any discussion addressing this problem, so that is why I am asking here.

Thanks a lot for any idea or possible "rule" that I may have overlooked.