Sorry I couldn't get back to you sooner. Try it with the 2 diodes, but it may not pull the R3/R5 junction down low enough, in which case just connect them as shown in your original circuit, i.e, 7 & 8 together then to R3/R5.Unfortunately I do not have a scope.
So pin 7 and pin 8 will each get their own diode and the anodes connected to R3/R5 as Alec said.