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You should not worry about resistors that are in tolerance, even "just within." Carbon composition resistors commonly were run off the assembly line, measured, and those within 5% were marked 5%, then the remaining ones within 10% were marked 10% (but they were really all off by at least plus 6% or minus 6%) and so on. So, it is very common in old consumer gear to find resistors that are just within tolerance. The sets were built that way.
There is no way to know if the IF alignment is screwed up without actually measuring it.
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Old TV literature, New York World's Fair, and other miscellany
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