here is my current code, changed to 101 PWM resolution to reduce overhead

Code:
'-----------------------------SPWM INT-----------------------------
CLEAR

INCLUDE "DT_INTS-18.bas"            ; Base Interrupt System
INCLUDE "SPWM_INT.bas"              ; Software PWM module
INCLUDE "ReEnterPBP-18.bas"    ; Include if using PBP interrupts

LED2 VAR PORTA.5

DEFINE SPWM_FREQ  100                ; SPWM Frequency
DEFINE SPWM_RES   101               ; SPWM Resolution

DutyVars   VAR BYTE[16]              ; DutyCycle Variables
  DutyVar1 VAR DutyVars[0]          ; group them in an array for easy access
  DutyVar2 VAR DutyVars[1]          ; with FOR loops etc.
  DutyVar3 VAR DutyVars[2]
  DutyVar4 VAR DutyVars[3]
  DutyVar5 VAR DutyVars[4]
  DutyVar6 VAR DutyVars[5]
  DutyVar7 VAR DutyVars[6]
  DutyVar8 VAR DutyVars[7]
  DutyVar9 VAR DutyVars[8]          
  DutyVar10 VAR DutyVars[9]         
  DutyVar11 VAR DutyVars[10]
  DutyVar12 VAR DutyVars[11]
  DutyVar13 VAR DutyVars[12]
  DutyVar14 VAR DutyVars[13]
  DutyVar15 VAR DutyVars[14]
  DutyVar16 VAR DutyVars[15]
  
ASM
SPWM_LIST  macro                    ; Define Pin's to use for SPWM
     SPWM_PIN  PORTB, 0, _DutyVar1  ; and the associated DutyCycle variables
     SPWM_PIN  PORTB, 1, _DutyVar2  ; Notice the underscore before variables
     SPWM_PIN  PORTB, 2, _DutyVar3
     SPWM_PIN  PORTB, 3, _DutyVar4
     SPWM_PIN  PORTB, 4, _DutyVar5
     SPWM_PIN  PORTB, 5, _DutyVar6
     SPWM_PIN  PORTB, 6, _DutyVar7
     SPWM_PIN  PORTB, 7, _DutyVar8
     SPWM_PIN  PORTC, 0, _DutyVar9 
     SPWM_PIN  PORTC, 1, _DutyVar10 
     SPWM_PIN  PORTC, 2, _DutyVar11
     SPWM_PIN  PORTC, 3, _DutyVar12
     SPWM_PIN  PORTC, 4, _DutyVar13
     SPWM_PIN  PORTC, 5, _DutyVar14
     SPWM_PIN  PORTC, 6, _DutyVar15
     SPWM_PIN  PORTC, 7, _DutyVar16 
     endm
  SPWM_INIT  SPWM_LIST              ; Initialize the Pins
ENDASM

ASM
INT_LIST  macro    ; IntSource,        Label,  Type, ResetFlag?
        INT_Handler   TMR1_INT,  SPWMhandler,  ASM,  yes
        INT_Handler   TMR0_INT,  _ToggleLED2,  PBP,  yes

    endm
    INT_CREATE                      ; Creates the interrupt processor
ENDASM

T0CON = %10010010             ; T0 = 16-bit, Prescaler 8
@ INT_ENABLE  TMR1_INT        ; enable Timer 1 interrupts
@ INT_ENABLE  TMR0_INT        ; enable Timer 0 interrupts


'-----------------------------Main Program-----------------------------
Main: