[SQL] Replace XML Path Stuff Query

I would like to replace the following query as I have performance problems. The execution plan is giving me a lot of redisual due to Table Spool operators (Lazy Spool)

SELECT DISTINCT LOT_0,
VarCode = STUFF(
(
SELECT DISTINCT ', ' + IT6.ID_0
FROM TOLOT S
INNER JOIN ETMM I ON I.ITMREF_0=S.ITMREF_0
INNER JOIN SICOD6 IT6 ON IT6.ID_0=I.TSICOD_6
WHERE IT6.LNGDES_0 <>'' AND LOT_0 <> '' AND TSICOD_0 = 'OP'
AND S.LOT_0=S2.LOT_0
FOR XML PATH (''), TYPE).value ('.[1]', 'nvarchar(max)'), 1, 2, ''
),
VarShort = STUFF(
(
SELECT DISTINCT ', ' + IT6.SHODES_0
FROM TOLOT S
INNER JOIN ETMM I ON I.ITMREF_0=S.ITMREF_0
INNER JOIN SICOD6 IT6 ON IT6.ID_0=I.TSICOD_6
WHERE IT6.LNGDES_0 <>'' AND LOT_0 <> '' AND TSICOD_0 = 'OP'
AND S.LOT_0=S2.LOT_0
FOR XML PATH (''), TYPE).value ('.[1]', 'nvarchar(max)'), 1, 2, ''
)
,VarLong = STUFF(
(
SELECT DISTINCT ', ' + IT6.LNGDES_0
FROM TOLOT S
INNER JOIN ETMM I ON I.ITMREF_0=S.ITMREF_0
INNER JOIN SICOD6 IT6 ON IT6.ID_0=I.TSICOD_6
WHERE IT6.LNGDES_0 <>'' AND LOT_0 <> '' AND TSICOD_0 = 'OP'
AND S.LOT_0=S2.LOT_0
FOR XML PATH (''), TYPE).value ('.[1]', 'nvarchar(max)'), 1, 2, ''
)
FROM TOLOT AS S2
GROUP BY LOT_0


I would appreciate your ideas

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