I know effectively nothing about assembly. I don't think HPWM can be used like that on sequential pins. I would try something interrupt based, like this:
Code:
'16F1825 
Define OSC 32
'32 MHz
'= 8 MHz instruction time
'= 0.000000125 s/instruction
'= 0.000125 ms/instruction
'= 0.125 us/instruction
'So, 320 us = 2560 clocks

'Set up Timer1
T1CON = %00000001
'        |||||||1 - TMR1ON
'        ||||||0  - Unimplemented
'        |||||0   - T1SYNC: 1 = Do not synchronize external clock input
'        ||||0    - T1OSCEN: 0 = Dedicated Timer1 oscillator circuit disabled
'        ||00     - T1CKPS: 00 = 1:1 Prescale value
'        00       - TMR1CS: 00 = Timer1 clock source is instruction clock (FOSC/4)

PortOffset var byte
Cycles var byte
Pulse_cnt var byte
Pulse_cnt = 0
T var byte
bGo var bit
bGo = 0
T = 0

INCLUDE "DT_INTS-14.bas"     ; Base Interrupt System
INCLUDE "ReEnterPBP.bas"  ; Include if using PBP interrupts
ASM
INT_LIST  macro    ; IntSource,        Label,  Type, ResetFlag?
        INT_Handler    TMR1_INT,  _TMR1_Handler,   PBP,  yes
    endm
    INT_CREATE               ; Creates the interrupt processor
ENDASM

@   INT_ENABLE   TMR1_INT     ; enable the interrupt

'Load Timer 1 with value to make it interrupt after 320 us
'for 320 us delay, want 2560 clocks
' 65534 - 2560 =  62974
' subtract ~7 more to account for the time to load the timer = 62967
' in hex, = $F5F7
TMR1H = $F5 	
TMR1L = $F7 	

'Main Loop
Main:
  if bGo = 1 then
    LOOKUP T, [1,2,4,5,16,17,18,19,20,21],PortOffset        ' Offsets from Port A to point to port A and port C I/O ports ( number of offset relates to bits offset in mem map of chip)
    Cycles = 0                                                     ' Set to 0
    for Cycles = 1 to Pulse_cnt                                   ' Each IR led increments the amount of pulses by 2 for IR LED ID use 
      PORTA.0[PortOffset] = 1                                 ' Set IR LED High
      pauseus 2                                                     ' Remain on for 2uS 
      PORTA.0[PortOffset] = 0                                 ' Set IR LED Low
      pauseus 9                                                     ' remain off for 9uS
    next Cycles 
          
    Pulse_cnt = Pulse_cnt + 2               ' increment pulse count by offset of 2 for each IR LED
    T = T + 1
    if T = 10 then
      T = 0
    endif
    bGo = 0
  endif
goto main



TMR1_Handler:
  'Re-load Timer1
  TMR1H = $F5 	
  TMR1L = $F7
  bGo = 1 	
@ INT_RETURN
Untested but it compiles...

Best Regards,
Paul